[PATCH 2/2] NEWS: News for big endian sha1 bug fix.

[Austin Clements]

Quoth david at tethera.net on Nov 24 at  5:29 pm:
> From: David Bremner <david at tethera.net>
> 
> We could give more details about how to migrate tags, but I'm not sure
> that it's a practical problem, or just a theoretical one.
> ---
>  NEWS | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/NEWS b/NEWS
> index 3383ecf..31c6284 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -1,6 +1,18 @@
> -Notmuch 0.17~rc1 (2013-11-20)
> +Notmuch 0.17~rc2 (2013-xx-yy)
>  =============================
>  
> +Incompatible change in SHA1 computation
> +---------------------------------------
> +
> +Previously on big endian architectures like sparc and powerpc the
> +computation of SHA1 hashes was incorrect. This meant that messages
> +with overlong or missing message-ids were given different computed
> +message-ids than on more common little endian architectures like i386
> +and amd64.  If you use notmuch on a big endian architecture, you are
> +strongly advised to make a backup of your tags using `notmuch dump`
> +before this upgrade. It should be possible to migrate the tags using a
> +script.
> +

Should this mention how to find such messages?  Something like

  notmuch dump |
  awk '/^notmuch-sha1-[0-9a-f]{40} / {system("notmuch search id:" $1)}'